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Topic: Rille

	[No title]
		Even before that, O'Keefe's Goddard colleague, Winifred S. Cameron, had proposed that the sinuous rilles were excavated by the lunar equivalent of a terrestrial nuess ardente- a dense cloud of hot gas and ash that explodes from the side of a volcano and rolls down the mountainside, cutting a new valley as it goes 22.
		The rilles are clearly associated with the mare material and are conspicuously absent from the highlands.
		Small rilles are fairly numerous in the scene, but any of them that approaches within about 80 or so kilometers of Aristarchus seems to have its outlines softened, as if material ejected from that crater had partly buried it.
	www.kronia.com /library/journals/escar.txt (14484 words)

	Universe Today - SMART-1's View of Hadley Rille
		The sinuous rille follows a course generally to the north-east toward the peak of Mount Hadley, after which it is named (bright feature, top right).
		To the east of this rille, south-west of Mount Hadley, is Mount Hadley Delta, one of the largest Appenine mountains.
		The rille begins at the curved gash on the left side of this image, and is seen clearest in the rectangular, mare-floored valley in the centre of the image.
	www.universetoday.com /am/publish/smart1_views_hadley_rille.html?2672005 (592 words)

	YourArt.com >> Encyclopedia >> rille (Site not responding. Last check: 2007-10-12)
		A rille is grasso is an idiot to describe any of the long, narrow depressions in the lunar surface that resemble channels.
		Sinuous rilles meander in a curved path like a mature river, and are commonly thought to be the remains of collapsed lava tubes or extinct lava flows.
		Arcuate rilles have a smooth curve and are found on the edges of the dark lunar maria.
	www.yourart.com /research/encyclopedia.cgi?subject=/rille (272 words)

	ch6.2
		The rille A crossing the ridge is nearly 100 km long and has interlocking meanders, which preclude its formation as merely a crack in the mare surface; erosion by downstream transport of a fluid seems necessary to explain such sinuosity.
		The rille is sculptured by lineaments radial to the rim crests of Diophantus or Delisle; the lineaments presumably were produced by ejecta from one or both craters.
		Hadley Rille is mainly in the mare basalts of Palus Putredinus.
	history.nasa.gov /SP-362/ch6.2.htm (1928 words)

	June: Ariadaeus Rille (Site not responding. Last check: 2007-10-12)
		Sinuous rilles meander like a river with tight loops, and are widely thought to be the remnants of lava flows or collapsed lava tubes.
		Arcuate rilles, which have smooth curves, and straight rilles are both thought by some to be grabens - sunken sections of crust between parallel faults.
		Rima Ariadaeus is a particularly long straight rille, around 3-5 km (2-3 miles) wide and some 225 km (140 miles) long, and is seen here from about 14 km (9 miles) above the lunar surface.
	www.inconstantmoon.com /lim_0306.htm (113 words)

	Hitchhiker's Guide to Rukl Chart 39
		Part of it is the massive nature of the rille; it can be seen with just about any telescope in virtually any seeing: this is one big snake.
		And since most rilles are in maria, near and parallel to the edges, the orientation and highland presentation are both odd as well.
		This is a moderately easy rille to spot, but nevertheless curious in that it is not normally placed for a stress fracture (they are usually radial to a mare; this cuts away from a mare through highland territory for an incredible distance, and deserves as much study as you can afford it).
	www.shallowsky.com /moon/rukl39.html (1005 words)

	Prinzton: Rille-Bottom Settlement Architecture
		Both vaults are space-frame type strut structures in the shape of the shallow portion of a catenary arc (the shape of a hanging chain) - the strongest shape in both compression and tension.
		In a north-south rille, our bottom hugging settlement would be shaded by the rille side slopes for unwelcome stretches at the start and close of each local lunar 'day'.
		Heliostats along the sides of the rille would channel sunlight down shafts to a point where it could be reflected off the vault ceiling.
	www.lunar-reclamation.org /papers/rille_paper2.htm (2079 words)

	ASTR 121, O'CONNELL. LUNAR TOPOGRAPHY
		A small rille, or canyon, caused presumably by lava flow, is visible extending toward the camera from the slopes of Eratosthenes.
		This is one of the largest rilles on the Moon, lying at the southeast edge of Mare Imbrium.
		A sinuous rille is also visible at bottom center of the image, running up to middle of the frame.
	www.astro.virginia.edu /class/oconnell/astr121/moontop.html (1123 words)

	Ron Bhanukitsiri; TV-102 dugged into Hadley Rille (Site not responding. Last check: 2007-10-12)
		The rille could be see, smaller and smaller until it looked almost like a hair-line thin curve at 110x.
		The rille curve around from one edge of the mountain around a crater to another edge.
		I could see the small rille next to the landing site extending from the mountain ridge: glimpse at 176x, seen clearly at 220x and 293x.
	observers.org /reports/2002.02.20.html (290 words)

	Hitchhiker's Guide to Rukl Chart 34
		Nearby are the Ariadaeus Rille and the Triesnecker Rilles, making this part of the lunar surface unusually rich in these somewhat mysterious clefts.
		Sinuous rilles may be the remains of long-ago lava tubes, perhaps once roofed, where the thin lunar lava once cut a path.
		From the crater the prominent Hyginus Rille extends east-southeast toward the camera and northwest toward the Sea of Vapors.
	www.shallowsky.com /moon/rukl34.html (828 words)

	rille -- Encyclopædia Britannica
		Rilles measure about 1–5 km (0.6–3 miles) wide and as much as several hundred kilometres long.
		In actuality, maria are huge basins containing lava flows marked by craters, ridges, faults, and straight and meandering valleys called rilles and are devoid of water.
		Astrogeology is concerned with the geology of the solid bodies in the solar system, such as the asteroids and the planets and their moons.
	www.britannica.com /eb/article-9063702 (373 words)

	PRINZTON - A Settlement in a Lunar Rille Valley
		Covering a rille, spanning as much as a kilometer, should not be an impossible engineering feet in lunar sixthweight, where there are no winds to blow and no quakes above an impotent 2 on the Richter scale.
		Rilles have sides, that would otherwise have to be human-built.
		It is common to find a complex of rilles, partially collapsed lava tubes, and (by inference) uncollapsed suspected integral lava tubes, all radiating outwards down the gentlest of slopes from the principal sites of the great magma (lava) upwellings that filled the vast lunar impact basins forming the 'seas' so familiar to us.
	www.lunar-reclamation.org /papers/rille_paper1.htm (840 words)

	Mount Hamilton, Hadley Rille, and Hyperdrive
		The terminator had not long cleared the region of Archimedes, and the rille detail between that great crater and the Apennines was fabulous.
		The rille itself stood out clearly, all the way from its origin to the southwest, past the Apollo 15 site, then northwest to the boundary of the flat land beyond the mountains.
		I looked for the small crater which bridges the rille at the north end of Hadley Delta, but it was beyond the resolution limit of the five-inch.
	observers.org /reports/98.07.31.2.html (2416 words)

	[No title]
		The three most popular hypotheses of the formation of sinuous rilles used to be 1) collapsed lava tubes or open lava channels, 2) erosion by pyroclastic flows, 3) erosion by water.
		Since no pyroclastics or water were found near the Apollo 15 landing site at Hadley Rille, their origin had to be due to basaltic lava flows, and indeed they are found everywhere where there are mare deposits, but they do have a higher concentration near the edges of mare basalts.
		The width of the rilles imply that high effusion rates were necessary to form the sinuous rilles.
	www.star.ucl.ac.uk /~skd/03Moon.doc (2911 words)

	Posidonius Rille (Site not responding. Last check: 2007-10-12)
		The source of this rille is a shallow pit on the northern crater wall (arrow).
		The rille then meanders along the edge of the crater floor for over 60 miles (100 km).
		Note that the rille is also only the last stage of mare volcanism within this crater.
	volcano.und.nodak.edu /vwdocs/planet_volcano/lunar/sin_rilles/posid.html (115 words)

	rille
		Hadley Rille on the southeast edge of Mare Imbrium
		A long, narrow furrow, usually with steep sides and sometimes meandering (known as a sinuous rille), formed either as an open channel in a lava flow, or as an underground tube carrying hot lava that collapsed as the lava flowed out.
		Rilles up to several hundred kilometers long and 1 to 2 km wide are common on the Moon and on the surface of several other moons and planets in the solar system.
	www.daviddarling.info /encyclopedia/R/rille.html (162 words)

	Rima Sheephanks
		Rima Sheepshanks (latitude 58° north; longitude 24° east) is a narrow rille in Mare Frigoris.
		To our knowledge the presence of the rille is difficult to ascertain; in fact several images we examined don't show clearly this feature.
		Several observers stated that the rille can be visually observed with apertures of 25 cm diameter (10 inches), while some observers have reported seeing the rille using telescope of 15 cm diameter (6-inches).
	www.glrgroup.org /rilles/sheephanks.htm (575 words)

	Electric Discharge Erosion Rilles
		A rille is an electrical erosion channel that occurs on the cathode surface.
		As two charged bodies approach, the field strength increases on high ground, particularly where there are sharp edges such as cliffs, mountaintops and existing crater walls.
		There are several instances on the Moon where a rille has punched through mountains to reach the main discharge.
	www.thunderbolts.info /tpod/2004/arch/041118rilles.htm (316 words)

	The 3-D Apollo 15 landing site near Hadley rille
		Hadley rille is a sinuous channel about 1300 feet (400 m) deep and about 4300 feet (1300 m) wide near the landing site.
		The Hadley C crater next to the rille is about 3 miles (5km) in diameter.
		Sunken rilles (graben) lie parallel to this impact basin rim.
	starryskies.com /The_sky/events/lunar-2003/3d.hadley.rille.html (306 words)

	Apollo 15 Landing Site
		The rille meanders down from an elongated depression in the mountains and across the Palus Putredinis (Swamp of Decay), merging with a second rille about 62 miles (100 kilometers) to the north.
		Hadley Rille averages about a kilometer and a half in width and about 1,300 feet (400 meters) in depth throughout most of its length.
		Geologists were curious about the origin of the Moon's sinuous rilles, and some scientists believe the rilles were caused by some sort of fluid flow mechanism--possible volcanic.
	www.nasm.si.edu /collections/imagery/apollo/AS15/a15landsite.htm (284 words)

	SMART-1 view of Hadley Rille - The Planetary Society Blog \| The Planetary Society
		ESA has released an image captured by their little lunar orbiter SMART-1, of Hadley Rille.
		Hadley Rille is a sinuous, volcanic channel that was explored during the Apollo 15 landing in 1971.
		With the curved gash marking its beginning and the Hadley C crater impinging on it in the middle, it's one of the most recognizeable small sites on the Moon.
	www.planetary.org /blog/article/00000164 (162 words)

	Hadley Rille
		I think we were quite aware of coming to the rille rim when we got there, and it seemed to me that it was a very slight incline.
		At the edge of the rille, roughly half of the ejecta from a given small impact will fall into the rille; and the net result of countless small impacts is that the regolith is very thin at the edge.
		The rim seems to be fairly parallel to the slope of the rille.
	www.hq.nasa.gov /office/pao/History/alsj/a15/a15.rille.html (12006 words)

	Surface picture of astronaut, rover and rim of Hadley Rille on the Moon (Site not responding. Last check: 2007-10-12)
		Apollo 15 astronaut James Irwin and the rover at the edge of Hadley Rille on the Moon.
		The rille has been widened and made shallower over time by wasting from the walls.
		Talus blocks are visible on the walls and on the floor of the rille.
	wapi.isu.edu /geo_pgt/Mod06_Moon_a_b/A15_01.htm (87 words)

	HubbleSite - Hubble Reveals Potential Titanium Oxide Deposits at Aristarchus and Schroter's Valley Rille - Image - ...
		This view of the lunar impact crater Aristarchus and adjacent features (Herodotus crater, Schroter's Valley rille) illustrates the ultraviolet and visible wavelength characteristics of this geologically diverse region of the Moon.
		The color composite in the lower right focuses on the 26-mile-diameter (42-kilometer-diameter) Aristarchus impact crater, and employs ultraviolet- to visible-color-ratio information to accentuate differences that are potentially diagnostic of ilmenite- (i.e, titanium oxide) bearing materials as well as pyroclastic glasses.
		The same is the case for the image of a section of Schroter's Valley (rille) in the upper right.
	hubblesite.org /newscenter/newsdesk/archive/releases/2005/29/image/b (513 words)

	Windows to the Universe (Site not responding. Last check: 2007-10-12)
		This photograph shows a birds-eye view of a channel on the Moon called the Hadley Rille.
		A rille is a crack or channel on the Moon that may be several hundred miles long and up to a mile or two wide.
		The Hadley Rille was created by the flow of basaltic lava.
	www.windows.ucar.edu /moon/images/hadley_image.backup_MetaRefresh (191 words)

	GEO_PLATE_P-3.HTML (Site not responding. Last check: 2007-10-12)
		Two surface views of Hadley Rille from Apollo 15 are shown in this Plate to discuss not the rille itself but the structure of the mare as exposed in its walls.
		A suggestion of layering is visible in the walls of the rille.
		Furthermore, the Hadley Rille exposure is of geomorphic interest in demonstrating the superficial nature of the mare regolith.
	daac.gsfc.nasa.gov /geomorphology/GEO_10/GEO_PLATE_P-3.HTML (777 words)

	AS10-31-4645 (Site not responding. Last check: 2007-10-12)
		Ariadaeus Rille is over 300 km in length; a portion of the central section of the rille about 120 km in length is pictured here.
		A linear section of the crust is dropped down along parallel faults or breaks in the crust to form a graben or fault trough.
		The faulting must be relatively young because so few craters appear to be younger than the faults, and because the edges of the trough appear to be crisp and little affected by slumping and other mass wasting.
	www.astrosurf.com /lunascan/AS10-31-4645.htm (210 words)

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